Non-condensing gas tankless · Camplux

Camplux CA528M-NG 150,000 BTU Natural Gas Tankless Water Heater

150,000 BTU/h non-condensing gas tankless, about 5.1 GPM at a 45°F rise

6.4 GPM max150,000 BTU/h~3.3 GPM at 70°F riseNatural gas

Updated October 2026

The short answer

A sensible non-condensing gas tankless for one shower at a time in cold climates.

Delivers
150,000 BTU/h input.
Watch for
Gas pipe sizing to confirm.
Suits
One shower at a time in cold climates.
Max flow (maker)
6.4 GPM
Input (maker)
150,000 btu_per_hour_per_foot_per_fahrenheit
Voltage
120 V
Fuel
Natural Gas
Connections
3/4" npt
Material
Stainless Steel
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What it delivers

The Camplux CA528M-NG 150,000 BTU Natural Gas Tankless Water Heater is a non-condensing gas tankless with a 150,000 BTU/h burner and a stated maximum flow of 6.4 GPM.

Worked out from its input, it delivers roughly 5.1 GPM when the water only has to rise 45°F, and 3.3 GPM at a 70°F winter rise: 2 showers at 2 GPM in summer, 1 shower at 2 GPM in winter. Size it to your fixtures and climate.

The line must deliver about 145 cubic feet of natural gas an hour when it fires flat out. The requirement calculator adds it up; a licensed fitter confirms the pipe.

Its exhaust runs hot, so the vent must be the material its manual lists, usually stainless; budget for the vent kit.

Other listed details: connections: 3/4" npt; material: Stainless Steel; model: CA528M-NG.

The listing gives dimensions of 14.92 in (W) x 6.69 in (H) and a weight of 31.3 lb.

Right unit for this house?

Install it when

  • One shower at a time in cold climates
  • Replacing a gas tank heater

Look at another unit when

  • More than 1 winter shower at once
  • Homes without a gas line

Strengths and trade-offs

Strengths

  • 150,000 BTU/h input
  • Up to 6.4 GPM

Trade-offs

  • Gas pipe sizing to confirm
  • Stainless venting costs more
  • Annual flushing on hard water

Install limits

  • Figures are the maker's or seller's own. Flow at a rise is our estimate from the input; gas, venting and electrical work needs a licensed professional.

Rated performance

Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.

Model numberCA528M-NGRetailer
Dimensions (seller)14.92"W x 6.69"HRetailer
Voltage120 VRetailer
Max flow (maker)6.4 GPMRetailer
Input (maker)150,000 btu_per_hour_per_foot_per_fahrenheitRetailer
Product weight31.3 lbRetailer
MaterialStainless SteelRetailer
FuelNatural GasRetailer
Connections3/4" nptRetailer

Rival units at this flow

More gas tankless water heaters rated for similar demand

Full gas tankless water heaters spec grid · Every Camplux unit in the catalog

Final verdict

A sensible non-condensing gas tankless for one shower at a time in cold climates.

Buy this unit

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Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Questions buyers ask

Is the Camplux CA528M-NG 150,000 BTU Natural Gas Tankless Water Heater big enough for two showers?
From its 150,000 BTU/h input we estimate about 5.1 GPM at a 45°F rise and 3.3 GPM at a 70°F rise, so 2 two-GPM showers with mild inlet water and 1 in a cold winter. The maker's flow chart for this model is the final word.
What size gas line does the Camplux CA528M-NG 150,000 BTU Natural Gas Tankless Water Heater need?
At full fire it uses about 145 cubic feet of natural gas an hour. The pipe size depends on the length of the run and every other gas appliance on it; the maker's manual and a licensed gas fitter decide it.